LandOfFree - US Patents - Listing for Aeronautics and astronautics,Aircraft, heavier-than-air

Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes

Drive shaft casing for a ducted fan anti-torque device

Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes

Dual piston drag damper for rotary-wing aircraft rotor

Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes

Dual power helicopter without a tail rotor

Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes

Dual rotor helicopter with tilted rotational axes

Aeronautics and astronautics – Aircraft – heavier-than-air – Beating wing sustained

Dual wing-pair air vehicle

Aeronautics and astronautics – Aircraft – heavier-than-air – Airplane and cylindrical rotor sustained

Dual-flight mode tandem rotor wing

Aeronautics and astronautics – Aircraft – heavier-than-air – Fluid sustained

Duct means for aircraft

Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes

Duct system for wind gust alleviation of aircraft and suspended

Aeronautics and astronautics – Aircraft – heavier-than-air – Fluid sustained

Ducted fan vehicles particularly useful as VTOL aircraft

Aeronautics and astronautics – Aircraft – heavier-than-air – Airplane and fluid sustained

Ducted fan vehicles particularly useful as VTOL aircraft

Aeronautics and astronautics – Aircraft – heavier-than-air – Fluid sustained

Ducted fan vehicles particularly useful as VTOL aircraft

Aeronautics and astronautics – Aircraft – heavier-than-air – Airplane and fluid sustained

Ducted fan vehicles particularly useful as VTOL aircraft

Aeronautics and astronautics – Aircraft – heavier-than-air – Airplane and fluid sustained

Ducted fan VTOL vehicles

Aeronautics and astronautics – Aircraft – heavier-than-air – Fluid sustained

Ducted fan VTOL vehicles

Aeronautics and astronautics – Aircraft – heavier-than-air – Airplane and fluid sustained

Ducted propeller aircraft (V/STOL)

Aeronautics and astronautics – Aircraft – heavier-than-air – Fluid sustained

Ducted vehicles particularly useful as VTOL aircraft